DesignHistory

Late 1950s and 1960s - this is an era of great changes in the history of the navy, an era of new opportunities and new weapons. This was primarily due to the emergence of sea-based nuclear missiles, which turned submarines into strategic weapons. The appearance of nuclear power plants on submarines has greatly increased their autonomy, cruising range, underwater speed and, as a consequence, the severity of the threat they create.

Project 61 Kashin class Destoyer's design specification was approved in 1957; the first ship was laid down in 1959 and commissioned in 1962. Many new components were developed for these ships, including surface-to-air missiles, radars and gas turbine engines. The gas turbines were arranged in two separate spaces and could be removed via the funnels for servicing. These were also the first Soviet ships designed to be closed down for nuclear fallout and had an operations room deep inside the ship rather than a large bridge.

The final ship in the class, Sderzhanyy, was completed to a modified design as the Project 61M or 61MP (Kashin-Mod), being fitted with four SS-N-2C Styx anti-ship missiles, new towed-array sonar, a raised helipad and four close range AK-630 Gatling guns. The two RBU-1000 ASW rocket launchers were mounted aft, but later removed. Six ships were modernised to this standard in the 1970s.

In 1974–1977, Provorny's SA-N-1 'Goa' replaced by SA-N-7 'Gadfly' SAM launcher as test platform of new air-defence misssile system and most Notable point in the reform is two mast on the middle of the hull mireplaced by a high Solid mast to install MR-700 "Top Steer" air-searching radar and Fire control radar of SA-N-7 durning the test,Provorny's code is changed to Pro.61E(There is a doubt that the discribtion of Project 61E in China is different from Wiki.“Project 61E /Rajput class: Export version, used by the Indian Navy ”this is discribtion of Pro.61E on Wiki.but Rajput class are coded Project 61ME in China)

Pro.61E Provorny

SA-N-7 SAM Launcher

Weapons

2 × AK-726 76mm Naval Guns

4 × AK-630 30mm AAguns

5 × 533mm Torpedo Launchers

2 × RBU-6000 ASW Rockets

2 × SA-N-1 SAM Launcher

4 × SS-N-2 Anti-Ship Missiles

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